SMART PRO 5.0 Pág. 31
7 Power pilot lamp This pilot lamp when lit indicates that the machine is on.
8 Alarm pilot lamp When the machine less voltage, over current, or over heat, This pilot lamp indicates
when lit that the protection of the machine has been activated.
9~12 Rod electrode welding key
Parameter Setting range
Arc force 0-10
Hot start 1-10
Arc length 1-10
13 Conversion switch Choose TIG.
14 Connector
The welder’s positive polarity output.
15 Welding current regulation Set welding current.
16 Connector The welder’s negative polarity output.
17 Power source input
To connect power source.
18 Power switch Choose “ON”, power through; Choose “OFF”, power cut off.
4.2 Welding current adjustment
GM series welder has the function of welding current pre-setting. Before welding,
adjusting welding current, the welding current display will show the ampere. It is
convenient to set parameters and adjust accurately.
4.3 Welding operation
4.3.1 Striking arc way
Knocking arc: take the electrode upright to touch the workpiece, after forming short circuit, quickly lift up
about 2~4 mm, and arc will be ignited. This method is difficult to master. But in the welding for the brittle
or hard steel, it is better to use knocking way.
electrode
workpiece
electrode
electrode
workpiece
workpiece
Take the electrode upright
The Electrode touch the workpiece
Lift up for about 2-4mm
upright
up
touch
2
～
4mm
Lifting arc: take the electrode to scrape the workpiece for striking arc. But it may cause the arc
scratch, so must to lift arc in the groove.
